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<h1>rpmio/rpmsq.c</h1><a href="rpmsq_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00005"></a>00005 <span class="preprocessor">#include "<a class="code" href="system_8h.html">system.h</a>"</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="preprocessor">#if defined(__LCLINT__)</span>
<a name="l00008"></a>00008 <span class="preprocessor"></span><span class="preprocessor">#define _BITS_SIGTHREAD_H </span><span class="comment">/* XXX avoid __sigset_t heartburn. */</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="comment">/*@-incondefs -protoparammatch@*/</span>
<a name="l00011"></a>00011 <span class="comment">/*@-exportheader@*/</span>
<a name="l00012"></a>00012 <span class="comment">/*@constant int SA_SIGINFO@*/</span>
<a name="l00013"></a>00013 <span class="keyword">extern</span> <span class="keywordtype">int</span> sighold(<span class="keywordtype">int</span> sig)
<a name="l00014"></a>00014 <span class="comment">/*@globals errno, systemState @*/</span>;
<a name="l00015"></a>00015 <span class="keyword">extern</span> <span class="keywordtype">int</span> sigignore(<span class="keywordtype">int</span> sig)
<a name="l00016"></a>00016 <span class="comment">/*@globals errno, systemState @*/</span>;
<a name="l00017"></a>00017 <span class="keyword">extern</span> <span class="keywordtype">int</span> sigpause(<span class="keywordtype">int</span> sig)
<a name="l00018"></a>00018 <span class="comment">/*@globals errno, systemState @*/</span>;
<a name="l00019"></a>00019 <span class="keyword">extern</span> <span class="keywordtype">int</span> sigrelse(<span class="keywordtype">int</span> sig)
<a name="l00020"></a>00020 <span class="comment">/*@globals errno, systemState @*/</span>;
<a name="l00021"></a>00021 <span class="keyword">extern</span> void (*sigset(<span class="keywordtype">int</span> sig, <span class="keywordtype">void</span> (*disp)(<span class="keywordtype">int</span>)))(int)
<a name="l00022"></a>00022 <span class="comment">/*@globals errno, systemState @*/</span>;
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="keyword">struct </span>qelem;
<a name="l00025"></a>00025 <span class="keyword">extern</span> <span class="keywordtype">void</span> insque(<span class="keyword">struct</span> qelem * __elem, <span class="keyword">struct</span> qelem * __prev)
<a name="l00026"></a>00026 <span class="comment">/*@modifies __elem, __prev @*/</span>;
<a name="l00027"></a>00027 <span class="keyword">extern</span> <span class="keywordtype">void</span> remque(<span class="keyword">struct</span> qelem * __elem)
<a name="l00028"></a>00028 <span class="comment">/*@modifies __elem @*/</span>;
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keyword">extern</span> pthread_t pthread_self(<span class="keywordtype">void</span>)
<a name="l00031"></a>00031 <span class="comment">/*@*/</span>;
<a name="l00032"></a>00032 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_equal(pthread_t t1, pthread_t t2)
<a name="l00033"></a>00033 <span class="comment">/*@*/</span>;
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_create(<span class="comment">/*@out@*/</span> pthread_t *restrict thread,
<a name="l00036"></a>00036 <span class="keyword">const</span> pthread_attr_t *restrict attr,
<a name="l00037"></a>00037 <span class="keywordtype">void</span> *(*start_routine)(<span class="keywordtype">void</span>*), <span class="keywordtype">void</span> *restrict arg)
<a name="l00038"></a>00038 <span class="comment">/*@modifies *thread @*/</span>;
<a name="l00039"></a>00039 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_join(pthread_t thread, <span class="comment">/*@out@*/</span> <span class="keywordtype">void</span> **value_ptr)
<a name="l00040"></a>00040 <span class="comment">/*@modifies *value_ptr @*/</span>;
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_setcancelstate(<span class="keywordtype">int</span> state, <span class="comment">/*@out@*/</span> <span class="keywordtype">int</span> *oldstate)
<a name="l00043"></a>00043 <span class="comment">/*@globals internalState @*/</span>
<a name="l00044"></a>00044 <span class="comment">/*@modifies *oldstate, internalState @*/</span>;
<a name="l00045"></a>00045 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_setcanceltype(<span class="keywordtype">int</span> type, <span class="comment">/*@out@*/</span> <span class="keywordtype">int</span> *oldtype)
<a name="l00046"></a>00046 <span class="comment">/*@globals internalState @*/</span>
<a name="l00047"></a>00047 <span class="comment">/*@modifies *oldtype, internalState @*/</span>;
<a name="l00048"></a>00048 <span class="keyword">extern</span> <span class="keywordtype">void</span> pthread_testcancel(<span class="keywordtype">void</span>)
<a name="l00049"></a>00049 <span class="comment">/*@globals internalState @*/</span>
<a name="l00050"></a>00050 <span class="comment">/*@modifies internalState @*/</span>;
<a name="l00051"></a>00051 <span class="keyword">extern</span> <span class="keywordtype">void</span> pthread_cleanup_pop(<span class="keywordtype">int</span> execute)
<a name="l00052"></a>00052 <span class="comment">/*@globals internalState @*/</span>
<a name="l00053"></a>00053 <span class="comment">/*@modifies internalState @*/</span>;
<a name="l00054"></a>00054 <span class="keyword">extern</span> <span class="keywordtype">void</span> pthread_cleanup_push(<span class="keywordtype">void</span> (*routine)(<span class="keywordtype">void</span>*), <span class="keywordtype">void</span> *arg)
<a name="l00055"></a>00055 <span class="comment">/*@globals internalState @*/</span>
<a name="l00056"></a>00056 <span class="comment">/*@modifies internalState @*/</span>;
<a name="l00057"></a>00057 <span class="keyword">extern</span> <span class="keywordtype">void</span> _pthread_cleanup_pop(<span class="comment">/*@out@*/</span> <span class="keyword">struct</span> _pthread_cleanup_buffer *__buffer, <span class="keywordtype">int</span> execute)
<a name="l00058"></a>00058 <span class="comment">/*@globals internalState @*/</span>
<a name="l00059"></a>00059 <span class="comment">/*@modifies internalState @*/</span>;
<a name="l00060"></a>00060 <span class="keyword">extern</span> <span class="keywordtype">void</span> _pthread_cleanup_push(<span class="comment">/*@out@*/</span> <span class="keyword">struct</span> _pthread_cleanup_buffer *__buffer, <span class="keywordtype">void</span> (*routine)(<span class="keywordtype">void</span>*), <span class="comment">/*@out@*/</span> <span class="keywordtype">void</span> *arg)
<a name="l00061"></a>00061 <span class="comment">/*@globals internalState @*/</span>
<a name="l00062"></a>00062 <span class="comment">/*@modifies internalState @*/</span>;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
<a name="l00065"></a>00065 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00066"></a>00066 <span class="comment">/*@modifies *attr, errno, internalState @*/</span>;
<a name="l00067"></a>00067 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutexattr_init(<span class="comment">/*@out@*/</span> pthread_mutexattr_t *attr)
<a name="l00068"></a>00068 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00069"></a>00069 <span class="comment">/*@modifies *attr, errno, internalState @*/</span>;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordtype">int</span> pthread_mutexattr_gettype(<span class="keyword">const</span> pthread_mutexattr_t *restrict attr,
<a name="l00072"></a>00072 <span class="comment">/*@out@*/</span> <span class="keywordtype">int</span> *restrict type)
<a name="l00073"></a>00073 <span class="comment">/*@modifies *type @*/</span>;
<a name="l00074"></a>00074 <span class="keywordtype">int</span> pthread_mutexattr_settype(pthread_mutexattr_t *attr, <span class="keywordtype">int</span> type)
<a name="l00075"></a>00075 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00076"></a>00076 <span class="comment">/*@modifies *attr, errno, internalState @*/</span>;
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutex_destroy(pthread_mutex_t *mutex)
<a name="l00079"></a>00079 <span class="comment">/*@modifies *mutex @*/</span>;
<a name="l00080"></a>00080 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutex_init(<span class="comment">/*@out@*/</span> pthread_mutex_t *restrict mutex,
<a name="l00081"></a>00081 <span class="comment">/*@null@*/</span> <span class="keyword">const</span> pthread_mutexattr_t *restrict attr)
<a name="l00082"></a>00082 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00083"></a>00083 <span class="comment">/*@modifies *mutex, errno, internalState @*/</span>;
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutex_lock(pthread_mutex_t *mutex)
<a name="l00086"></a>00086 <span class="comment">/*@globals errno @*/</span>
<a name="l00087"></a>00087 <span class="comment">/*@modifies *mutex, errno @*/</span>;
<a name="l00088"></a>00088 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutex_trylock(pthread_mutex_t *mutex)
<a name="l00089"></a>00089 <span class="comment">/*@globals errno @*/</span>
<a name="l00090"></a>00090 <span class="comment">/*@modifies *mutex, errno @*/</span>;
<a name="l00091"></a>00091 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_mutex_unlock(pthread_mutex_t *mutex)
<a name="l00092"></a>00092 <span class="comment">/*@globals errno @*/</span>
<a name="l00093"></a>00093 <span class="comment">/*@modifies *mutex, errno @*/</span>;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_cond_destroy(pthread_cond_t *<a class="code" href="lparser_8c.html#2dcf8e7e5b9d5a723965b3a44ce34639">cond</a>)
<a name="l00096"></a>00096 <span class="comment">/*@modifies *cond @*/</span>;
<a name="l00097"></a>00097 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_cond_init(<span class="comment">/*@out@*/</span> pthread_cond_t *restrict <a class="code" href="lparser_8c.html#2dcf8e7e5b9d5a723965b3a44ce34639">cond</a>,
<a name="l00098"></a>00098 <span class="keyword">const</span> pthread_condattr_t *restrict attr)
<a name="l00099"></a>00099 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00100"></a>00100 <span class="comment">/*@modifies *cond, errno, internalState @*/</span>;
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_cond_timedwait(pthread_cond_t *restrict <a class="code" href="lparser_8c.html#2dcf8e7e5b9d5a723965b3a44ce34639">cond</a>,
<a name="l00103"></a>00103 pthread_mutex_t *restrict mutex,
<a name="l00104"></a>00104 <span class="keyword">const</span> <span class="keyword">struct</span> timespec *restrict abstime)
<a name="l00105"></a>00105 <span class="comment">/*@modifies *cond, *mutex @*/</span>;
<a name="l00106"></a>00106 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_cond_wait(pthread_cond_t *restrict <a class="code" href="lparser_8c.html#2dcf8e7e5b9d5a723965b3a44ce34639">cond</a>,
<a name="l00107"></a>00107 pthread_mutex_t *restrict mutex)
<a name="l00108"></a>00108 <span class="comment">/*@modifies *cond, *mutex @*/</span>;
<a name="l00109"></a>00109 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_cond_broadcast(pthread_cond_t *<a class="code" href="lparser_8c.html#2dcf8e7e5b9d5a723965b3a44ce34639">cond</a>)
<a name="l00110"></a>00110 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00111"></a>00111 <span class="comment">/*@modifies *cond, errno, internalState @*/</span>;
<a name="l00112"></a>00112 <span class="keyword">extern</span> <span class="keywordtype">int</span> pthread_cond_signal(pthread_cond_t *<a class="code" href="lparser_8c.html#2dcf8e7e5b9d5a723965b3a44ce34639">cond</a>)
<a name="l00113"></a>00113 <span class="comment">/*@globals errno, internalState @*/</span>
<a name="l00114"></a>00114 <span class="comment">/*@modifies *cond, errno, internalState @*/</span>;
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="comment">/*@=exportheader@*/</span>
<a name="l00117"></a>00117 <span class="comment">/*@=incondefs =protoparammatch@*/</span>
<a name="l00118"></a>00118 <span class="preprocessor">#endif</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span>
<a name="l00120"></a>00120 <span class="preprocessor">#include <signal.h></span>
<a name="l00121"></a>00121 <span class="preprocessor">#include <sys/signal.h></span>
<a name="l00122"></a>00122 <span class="preprocessor">#include <sys/wait.h></span>
<a name="l00123"></a>00123 <span class="preprocessor">#include <search.h></span>
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="preprocessor">#if defined(HAVE_PTHREAD_H)</span>
<a name="l00126"></a>00126 <span class="preprocessor"></span>
<a name="l00127"></a>00127 <span class="preprocessor">#include <pthread.h></span>
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="comment">/* XXX suggested in bugzilla #159024 */</span>
<a name="l00130"></a>00130 <span class="preprocessor">#if PTHREAD_MUTEX_DEFAULT != PTHREAD_MUTEX_NORMAL</span>
<a name="l00131"></a>00131 <span class="preprocessor"></span><span class="preprocessor"> #error RPM expects PTHREAD_MUTEX_DEFAULT == PTHREAD_MUTEX_NORMAL</span>
<a name="l00132"></a>00132 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00133"></a>00133 <span class="preprocessor"></span>
<a name="l00134"></a>00134 <span class="preprocessor">#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP</span>
<a name="l00135"></a>00135 <span class="preprocessor"></span><span class="comment">/*@unchecked@*/</span>
<a name="l00136"></a>00136 <span class="keyword">static</span> pthread_mutex_t rpmsigTbl_lock = PTHREAD_MUTEX_INITIALIZER;
<a name="l00137"></a>00137 <span class="preprocessor">#else</span>
<a name="l00138"></a>00138 <span class="preprocessor"></span><span class="comment">/*@unchecked@*/</span>
<a name="l00139"></a>00139 <span class="comment">/*@-type@*/</span>
<a name="l00140"></a>00140 <span class="keyword">static</span> pthread_mutex_t rpmsigTbl_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
<a name="l00141"></a>00141 <span class="comment">/*@=type@*/</span>
<a name="l00142"></a>00142 <span class="preprocessor">#endif</span>
<a name="l00143"></a>00143 <span class="preprocessor"></span>
<a name="l00144"></a>00144 <span class="preprocessor">#define DO_LOCK() pthread_mutex_lock(&rpmsigTbl_lock);</span>
<a name="l00145"></a>00145 <span class="preprocessor"></span><span class="preprocessor">#define DO_UNLOCK() pthread_mutex_unlock(&rpmsigTbl_lock);</span>
<a name="l00146"></a>00146 <span class="preprocessor"></span><span class="preprocessor">#define INIT_LOCK() \</span>
<a name="l00147"></a>00147 <span class="preprocessor"> { pthread_mutexattr_t attr; \</span>
<a name="l00148"></a>00148 <span class="preprocessor"> (void) pthread_mutexattr_init(&attr); \</span>
<a name="l00149"></a>00149 <span class="preprocessor"> (void) pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); \</span>
<a name="l00150"></a>00150 <span class="preprocessor"> (void) pthread_mutex_init (&rpmsigTbl_lock, &attr); \</span>
<a name="l00151"></a>00151 <span class="preprocessor"> (void) pthread_mutexattr_destroy(&attr); \</span>
<a name="l00152"></a>00152 <span class="preprocessor"> rpmsigTbl_sigchld->active = 0; \</span>
<a name="l00153"></a>00153 <span class="preprocessor"> }</span>
<a name="l00154"></a>00154 <span class="preprocessor"></span><span class="preprocessor">#define ADD_REF(__tbl) (__tbl)->active++</span>
<a name="l00155"></a>00155 <span class="preprocessor"></span><span class="preprocessor">#define SUB_REF(__tbl) --(__tbl)->active</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span><span class="preprocessor">#define CLEANUP_HANDLER(__handler, __arg, __oldtypeptr) \</span>
<a name="l00157"></a>00157 <span class="preprocessor"> (void) pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, (__oldtypeptr));\</span>
<a name="l00158"></a>00158 <span class="preprocessor"> pthread_cleanup_push((__handler), (__arg));</span>
<a name="l00159"></a>00159 <span class="preprocessor"></span><span class="preprocessor">#define CLEANUP_RESET(__execute, __oldtype) \</span>
<a name="l00160"></a>00160 <span class="preprocessor"> pthread_cleanup_pop(__execute); \</span>
<a name="l00161"></a>00161 <span class="preprocessor"> (void) pthread_setcanceltype ((__oldtype), &(__oldtype));</span>
<a name="l00162"></a>00162 <span class="preprocessor"></span>
<a name="l00163"></a>00163 <span class="preprocessor">#define SAME_THREAD(_a, _b) pthread_equal(((pthread_t)_a), ((pthread_t)_b))</span>
<a name="l00164"></a>00164 <span class="preprocessor"></span>
<a name="l00165"></a>00165 <span class="preprocessor">#define ME() ((void *)pthread_self())</span>
<a name="l00166"></a>00166 <span class="preprocessor"></span>
<a name="l00167"></a>00167 <span class="preprocessor">#else</span>
<a name="l00168"></a>00168 <span class="preprocessor"></span>
<a name="l00169"></a><a class="code" href="rpmsq_8c.html#707fd6e9d8f797bde46fd679fecc19f2">00169</a> <span class="preprocessor">#define DO_LOCK()</span>
<a name="l00170"></a><a class="code" href="rpmsq_8c.html#0d1939f0946f51ef9c8d4a3ad97935ab">00170</a> <span class="preprocessor"></span><span class="preprocessor">#define DO_UNLOCK()</span>
<a name="l00171"></a><a class="code" href="rpmsq_8c.html#b63be76d0a4a58d53c66c88bd353fe25">00171</a> <span class="preprocessor"></span><span class="preprocessor">#define INIT_LOCK()</span>
<a name="l00172"></a><a class="code" href="rpmsq_8c.html#739f39288cc3c3a4c2896b2c21e3373f">00172</a> <span class="preprocessor"></span><span class="preprocessor">#define ADD_REF(__tbl) </span><span class="comment">/*@-noeffect@*/</span> (0) <span class="comment">/*@=noeffect@*/</span>
<a name="l00173"></a><a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">00173</a> <span class="preprocessor">#define SUB_REF(__tbl) </span><span class="comment">/*@-noeffect@*/</span> (0) <span class="comment">/*@=noeffect@*/</span>
<a name="l00174"></a><a class="code" href="rpmsq_8c.html#719d9b8f4152d18f88d56908185a5fa1">00174</a> <span class="preprocessor">#define CLEANUP_HANDLER(__handler, __arg, __oldtypeptr)</span>
<a name="l00175"></a><a class="code" href="rpmsq_8c.html#ba43c05e591e8fd1fa2e584f497fba10">00175</a> <span class="preprocessor"></span><span class="preprocessor">#define CLEANUP_RESET(__execute, __oldtype)</span>
<a name="l00176"></a>00176 <span class="preprocessor"></span>
<a name="l00177"></a><a class="code" href="rpmsq_8c.html#dd299446148c5913ca3106e598cc616c">00177</a> <span class="preprocessor">#define SAME_THREAD(_a, _b) (42)</span>
<a name="l00178"></a>00178 <span class="preprocessor"></span>
<a name="l00179"></a><a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">00179</a> <span class="preprocessor">#define ME() (((void *)getpid()))</span>
<a name="l00180"></a>00180 <span class="preprocessor"></span>
<a name="l00181"></a>00181 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_PTHREAD_H */</span>
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="preprocessor">#include <<a class="code" href="rpmsq_8h.html">rpmsq.h</a>></span>
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="preprocessor">#include "<a class="code" href="debug_8h.html">debug.h</a>"</span>
<a name="l00186"></a>00186
<a name="l00187"></a><a class="code" href="rpmsq_8c.html#09b78093bc16360838cf96e991d7ab10">00187</a> <span class="preprocessor">#define _RPMSQ_DEBUG 0</span>
<a name="l00188"></a>00188 <span class="preprocessor"></span><span class="comment">/*@unchecked@*/</span>
<a name="l00189"></a><a class="code" href="rpmsq_8h.html#9a254c1bbc1ff71759916077c8647d4b">00189</a> <span class="keywordtype">int</span> <a class="code" href="poptALL_8c.html#9a254c1bbc1ff71759916077c8647d4b">_rpmsq_debug</a> = <a class="code" href="rpmsq_8c.html#09b78093bc16360838cf96e991d7ab10">_RPMSQ_DEBUG</a>;
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="comment">/*@unchecked@*/</span>
<a name="l00192"></a><a class="code" href="rpmsq_8c.html#7c3b5b29e03fad6bc03685e6e41726ae">00192</a> <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structrpmsqElem.html">rpmsqElem</a> <a class="code" href="rpmsq_8c.html#7c3b5b29e03fad6bc03685e6e41726ae">rpmsqRock</a>;
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="comment">/*@-compmempass@*/</span>
<a name="l00195"></a>00195 <span class="comment">/*@unchecked@*/</span>
<a name="l00196"></a><a class="code" href="rpmsq_8h.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">00196</a> <a class="code" href="structrpmsqElem.html">rpmsq</a> <a class="code" href="rpmsq_8c.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">rpmsqQueue</a> = &<a class="code" href="rpmsq_8c.html#7c3b5b29e03fad6bc03685e6e41726ae">rpmsqRock</a>;
<a name="l00197"></a>00197 <span class="comment">/*@=compmempass@*/</span>
<a name="l00198"></a>00198
<a name="l00199"></a><a class="code" href="rpmsq_8h.html#7689e2d4e7d3ab32987c4c2e7d44b411">00199</a> <span class="keywordtype">int</span> <a class="code" href="rpmsq_8c.html#7689e2d4e7d3ab32987c4c2e7d44b411">rpmsqInsert</a>(<span class="keywordtype">void</span> * elem, <span class="keywordtype">void</span> * prev)
<a name="l00200"></a>00200 {
<a name="l00201"></a>00201 <a class="code" href="structrpmsqElem.html">rpmsq</a> sq = (<a class="code" href="structrpmsqElem.html">rpmsq</a>) elem;
<a name="l00202"></a>00202 <span class="keywordtype">int</span> ret = -1;
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <span class="keywordflow">if</span> (sq != NULL) {
<a name="l00205"></a>00205 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00206"></a>00206 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00207"></a>00207 fprintf(stderr, <span class="stringliteral">" Insert(%p): %p\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq);
<a name="l00208"></a>00208 <span class="preprocessor">#endif</span>
<a name="l00209"></a>00209 <span class="preprocessor"></span> ret = sighold(SIGCHLD);
<a name="l00210"></a>00210 <span class="keywordflow">if</span> (ret == 0) {
<a name="l00211"></a>00211 sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a> = 0;
<a name="l00212"></a>00212 sq-><a class="code" href="structrpmsqElem.html#be51908cc11dfab4176ca2f1ba39d8ba">reaped</a> = 0;
<a name="l00213"></a>00213 sq-><a class="code" href="structrpmsqElem.html#6a4ffd880d84a6717338f3c660411645">status</a> = 0;
<a name="l00214"></a>00214 sq-><a class="code" href="structrpmsqElem.html#d341ce4fa8cded55a7a133876dbb5200">reaper</a> = 1;
<a name="l00215"></a>00215 <span class="comment">/*@-bounds@*/</span>
<a name="l00216"></a>00216 sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] = sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] = -1;
<a name="l00217"></a>00217 <span class="comment">/*@=bounds@*/</span>
<a name="l00218"></a>00218
<a name="l00219"></a>00219 sq-><a class="code" href="structrpmsqElem.html#3e3b5729f099bb666eeefcbffebbd04c">id</a> = <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>();
<a name="l00220"></a>00220 ret = pthread_mutex_init(&sq-><a class="code" href="structrpmsqElem.html#9a0797e37c3dacb80d4d2a5189474299">mutex</a>, NULL);
<a name="l00221"></a>00221 insque(elem, (prev != NULL ? prev : <a class="code" href="rpmsq_8c.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">rpmsqQueue</a>));
<a name="l00222"></a>00222 ret = sigrelse(SIGCHLD);
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225 <span class="keywordflow">return</span> ret;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227
<a name="l00228"></a><a class="code" href="rpmsq_8h.html#09357ef0a5e5847e29cbe8cc591c79f0">00228</a> <span class="keywordtype">int</span> <a class="code" href="rpmsq_8c.html#09357ef0a5e5847e29cbe8cc591c79f0">rpmsqRemove</a>(<span class="keywordtype">void</span> * elem)
<a name="l00229"></a>00229 {
<a name="l00230"></a>00230 <a class="code" href="structrpmsqElem.html">rpmsq</a> sq = (<a class="code" href="structrpmsqElem.html">rpmsq</a>) elem;
<a name="l00231"></a>00231 <span class="keywordtype">int</span> ret = -1;
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="keywordflow">if</span> (elem != NULL) {
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00236"></a>00236 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00237"></a>00237 fprintf(stderr, <span class="stringliteral">" Remove(%p): %p\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq);
<a name="l00238"></a>00238 <span class="preprocessor">#endif</span>
<a name="l00239"></a>00239 <span class="preprocessor"></span> ret = sighold (SIGCHLD);
<a name="l00240"></a>00240 <span class="keywordflow">if</span> (ret == 0) {
<a name="l00241"></a>00241 remque(elem);
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="comment">/* Unlock the mutex and then destroy it */</span>
<a name="l00244"></a>00244 <span class="keywordflow">if</span>((ret = pthread_mutex_unlock(&sq-><a class="code" href="structrpmsqElem.html#9a0797e37c3dacb80d4d2a5189474299">mutex</a>)) == 0)
<a name="l00245"></a>00245 ret = pthread_mutex_destroy(&sq-><a class="code" href="structrpmsqElem.html#9a0797e37c3dacb80d4d2a5189474299">mutex</a>);
<a name="l00246"></a>00246
<a name="l00247"></a>00247 sq-><a class="code" href="structrpmsqElem.html#3e3b5729f099bb666eeefcbffebbd04c">id</a> = NULL;
<a name="l00248"></a>00248 <span class="comment">/*@-bounds@*/</span>
<a name="l00249"></a>00249 <span class="keywordflow">if</span> (sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1]) ret = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1]);
<a name="l00250"></a>00250 <span class="keywordflow">if</span> (sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0]) ret = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0]);
<a name="l00251"></a>00251 sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] = sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] = -1;
<a name="l00252"></a>00252 <span class="comment">/*@=bounds@*/</span>
<a name="l00253"></a>00253 <span class="preprocessor">#ifdef NOTYET </span><span class="comment">/* rpmpsmWait debugging message needs */</span>
<a name="l00254"></a>00254 sq-><a class="code" href="structrpmsqElem.html#d341ce4fa8cded55a7a133876dbb5200">reaper</a> = 1;
<a name="l00255"></a>00255 sq-><a class="code" href="structrpmsqElem.html#6a4ffd880d84a6717338f3c660411645">status</a> = 0;
<a name="l00256"></a>00256 sq-><a class="code" href="structrpmsqElem.html#be51908cc11dfab4176ca2f1ba39d8ba">reaped</a> = 0;
<a name="l00257"></a>00257 sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a> = 0;
<a name="l00258"></a>00258 <span class="preprocessor">#endif</span>
<a name="l00259"></a>00259 <span class="preprocessor"></span> ret = sigrelse(SIGCHLD);
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262 <span class="keywordflow">return</span> ret;
<a name="l00263"></a>00263 }
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <span class="comment">/*@unchecked@*/</span>
<a name="l00266"></a><a class="code" href="rpmsq_8h.html#4657013ced6d8faf0f3466badbf13638">00266</a> sigset_t <a class="code" href="rpmsq_8c.html#4657013ced6d8faf0f3466badbf13638">rpmsqCaught</a>;
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="comment">/*@unchecked@*/</span>
<a name="l00269"></a>00269 <span class="comment">/*@-fullinitblock@*/</span>
<a name="l00270"></a><a class="code" href="structrpmsig__s.html">00270</a> <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structrpmsig__s.html">rpmsig_s</a> {
<a name="l00271"></a><a class="code" href="structrpmsig__s.html#6c49c6222429fbea1637953d70000a7c">00271</a> <span class="keywordtype">int</span> <a class="code" href="structrpmsig__s.html#6c49c6222429fbea1637953d70000a7c">signum</a>;
<a name="l00272"></a>00272 void (*<a class="code" href="structrpmsig__s.html#9c115bdac0110fbfe49a5901a9191208">handler</a>) (<span class="keywordtype">int</span> <a class="code" href="structrpmsig__s.html#6c49c6222429fbea1637953d70000a7c">signum</a>, <span class="keywordtype">void</span> * info, <span class="keywordtype">void</span> * context);
<a name="l00273"></a><a class="code" href="structrpmsig__s.html#296a36872a83095b19c3a1dc7ab1b856">00273</a> <span class="keywordtype">int</span> <a class="code" href="structrpmsig__s.html#296a36872a83095b19c3a1dc7ab1b856">active</a>;
<a name="l00274"></a><a class="code" href="structrpmsig__s.html#d7c7b5e1f0df3a997cfeeb2caadc3846">00274</a> <span class="keyword">struct </span>sigaction oact;
<a name="l00275"></a>00275 } <a class="code" href="rpmsq_8c.html#166a32a23052abe951fdf1f2c64cb9c1">rpmsigTbl</a>[] = {
<a name="l00276"></a>00276 { SIGINT, <a class="code" href="rpmsq_8c.html#6698fdf84f418b855bf456c27113f5f4">rpmsqAction</a> },
<a name="l00277"></a>00277 <span class="preprocessor">#define rpmsigTbl_sigint (&rpmsigTbl[0])</span>
<a name="l00278"></a>00278 <span class="preprocessor"></span> { SIGQUIT, rpmsqAction },
<a name="l00279"></a>00279 <span class="preprocessor">#define rpmsigTbl_sigquit (&rpmsigTbl[1])</span>
<a name="l00280"></a>00280 <span class="preprocessor"></span> { SIGCHLD, rpmsqAction },
<a name="l00281"></a>00281 <span class="preprocessor">#define rpmsigTbl_sigchld (&rpmsigTbl[2])</span>
<a name="l00282"></a>00282 <span class="preprocessor"></span> { SIGHUP, rpmsqAction },
<a name="l00283"></a>00283 <span class="preprocessor">#define rpmsigTbl_sighup (&rpmsigTbl[3])</span>
<a name="l00284"></a>00284 <span class="preprocessor"></span> { SIGTERM, rpmsqAction },
<a name="l00285"></a>00285 <span class="preprocessor">#define rpmsigTbl_sigterm (&rpmsigTbl[4])</span>
<a name="l00286"></a>00286 <span class="preprocessor"></span> { SIGPIPE, rpmsqAction },
<a name="l00287"></a>00287 <span class="preprocessor">#define rpmsigTbl_sigpipe (&rpmsigTbl[5])</span>
<a name="l00288"></a>00288 <span class="preprocessor"></span> { -1, NULL },
<a name="l00289"></a>00289 };
<a name="l00290"></a>00290 <span class="comment">/*@=fullinitblock@*/</span>
<a name="l00291"></a>00291
<a name="l00292"></a><a class="code" href="rpmsq_8h.html#6698fdf84f418b855bf456c27113f5f4">00292</a> <span class="keywordtype">void</span> <a class="code" href="rpmsq_8c.html#6698fdf84f418b855bf456c27113f5f4">rpmsqAction</a>(<span class="keywordtype">int</span> signum,
<a name="l00293"></a>00293 <span class="comment">/*@unused@*/</span> <span class="keywordtype">void</span> * info, <span class="comment">/*@unused@*/</span> <span class="keywordtype">void</span> * context)
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295 <span class="keywordtype">int</span> <a class="code" href="llex_8c.html#2dafb01cf5d69aadcbc676c2a2d7cc9f">save</a> = <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>;
<a name="l00296"></a>00296 <a class="code" href="structrpmsig__s.html">rpmsig</a> tbl;
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="keywordflow">for</span> (tbl = rpmsigTbl; tbl-><a class="code" href="structrpmsig__s.html#6c49c6222429fbea1637953d70000a7c">signum</a> >= 0; tbl++) {
<a name="l00299"></a>00299 <span class="keywordflow">if</span> (tbl-><a class="code" href="structrpmsig__s.html#6c49c6222429fbea1637953d70000a7c">signum</a> != signum)
<a name="l00300"></a>00300 <span class="keywordflow">continue</span>;
<a name="l00301"></a>00301
<a name="l00302"></a>00302 (<span class="keywordtype">void</span>) sigaddset(&rpmsqCaught, signum);
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordflow">switch</span> (signum) {
<a name="l00305"></a>00305 <span class="keywordflow">case</span> SIGCHLD:
<a name="l00306"></a>00306 <span class="keywordflow">while</span> (1) {
<a name="l00307"></a>00307 <a class="code" href="structrpmsqElem.html">rpmsq</a> sq;
<a name="l00308"></a>00308 <span class="keywordtype">int</span> status = 0;
<a name="l00309"></a>00309 pid_t reaped = waitpid(0, &status, WNOHANG);
<a name="l00310"></a>00310
<a name="l00311"></a>00311 <span class="comment">/* XXX errno set to ECHILD/EINVAL/EINTR. */</span>
<a name="l00312"></a>00312 <span class="keywordflow">if</span> (reaped <= 0)
<a name="l00313"></a>00313 <span class="comment">/*@innerbreak@*/</span> <span class="keywordflow">break</span>;
<a name="l00314"></a>00314
<a name="l00315"></a>00315 <span class="comment">/* XXX insque(3)/remque(3) are dequeue, not ring. */</span>
<a name="l00316"></a>00316 <span class="keywordflow">for</span> (sq = <a class="code" href="rpmsq_8c.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">rpmsqQueue</a>-><a class="code" href="structrpmsqElem.html#49040c91bce48af334f1946c1f135587">q_forw</a>;
<a name="l00317"></a>00317 sq != NULL && sq != <a class="code" href="rpmsq_8c.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">rpmsqQueue</a>;
<a name="l00318"></a>00318 sq = sq-><a class="code" href="structrpmsqElem.html#49040c91bce48af334f1946c1f135587">q_forw</a>)
<a name="l00319"></a>00319 {
<a name="l00320"></a>00320 <span class="keywordtype">int</span> ret;
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="keywordflow">if</span> (sq->child != reaped)
<a name="l00323"></a>00323 <span class="comment">/*@innercontinue@*/</span> <span class="keywordflow">continue</span>;
<a name="l00324"></a>00324 sq->reaped = reaped;
<a name="l00325"></a>00325 sq->status = status;
<a name="l00326"></a>00326
<a name="l00327"></a>00327 <span class="comment">/* Unlock the mutex. The waiter will then be able to </span>
<a name="l00328"></a>00328 <span class="comment"> * aquire the lock. </span>
<a name="l00329"></a>00329 <span class="comment"> *</span>
<a name="l00330"></a>00330 <span class="comment"> * XXX: jbj, wtd, if this fails? </span>
<a name="l00331"></a>00331 <span class="comment"> */</span>
<a name="l00332"></a>00332 ret = pthread_mutex_unlock(&sq->mutex);
<a name="l00333"></a>00333
<a name="l00334"></a>00334 <span class="comment">/*@innerbreak@*/</span> <span class="keywordflow">break</span>;
<a name="l00335"></a>00335 }
<a name="l00336"></a>00336 }
<a name="l00337"></a>00337 <span class="comment">/*@switchbreak@*/</span> <span class="keywordflow">break</span>;
<a name="l00338"></a>00338 <span class="keywordflow">default</span>:
<a name="l00339"></a>00339 <span class="comment">/*@switchbreak@*/</span> <span class="keywordflow">break</span>;
<a name="l00340"></a>00340 }
<a name="l00341"></a>00341 <span class="keywordflow">break</span>;
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343 <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> = save;
<a name="l00344"></a>00344 }
<a name="l00345"></a>00345
<a name="l00346"></a><a class="code" href="rpmsq_8h.html#d9549ed43cbb708e506288cb1e33d009">00346</a> <span class="keywordtype">int</span> <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(<span class="keywordtype">int</span> signum, <span class="comment">/*@null@*/</span> <a class="code" href="rpmsq_8h.html#8053bb3dd637781bf41e5998f74c2c35">rpmsqAction_t</a> handler)
<a name="l00347"></a>00347 <span class="comment">/*@globals rpmsigTbl @*/</span>
<a name="l00348"></a>00348 <span class="comment">/*@modifies rpmsigTbl @*/</span>
<a name="l00349"></a>00349 {
<a name="l00350"></a>00350 <span class="keywordtype">int</span> tblsignum = (signum >= 0 ? signum : -signum);
<a name="l00351"></a>00351 <span class="keyword">struct </span>sigaction sa;
<a name="l00352"></a>00352 <a class="code" href="structrpmsig__s.html">rpmsig</a> tbl;
<a name="l00353"></a>00353 <span class="keywordtype">int</span> ret = -1;
<a name="l00354"></a>00354
<a name="l00355"></a>00355 (void) <a class="code" href="rpmsq_8c.html#707fd6e9d8f797bde46fd679fecc19f2">DO_LOCK</a> ();
<a name="l00356"></a>00356 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">rpmsqQueue</a>-><a class="code" href="structrpmsqElem.html#3e3b5729f099bb666eeefcbffebbd04c">id</a> == NULL)
<a name="l00357"></a>00357 <a class="code" href="rpmsq_8c.html#b06ae8b0c37fcfa0c999b99c0bf4f91e">rpmsqQueue</a>-><a class="code" href="structrpmsqElem.html#3e3b5729f099bb666eeefcbffebbd04c">id</a> = <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>();
<a name="l00358"></a>00358 <span class="keywordflow">for</span> (tbl = rpmsigTbl; tbl->signum >= 0; tbl++) {
<a name="l00359"></a>00359 <span class="keywordflow">if</span> (tblsignum != tbl->signum)
<a name="l00360"></a>00360 <span class="keywordflow">continue</span>;
<a name="l00361"></a>00361
<a name="l00362"></a>00362 if (signum >= 0) { <span class="comment">/* Enable. */</span>
<a name="l00363"></a>00363 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#739f39288cc3c3a4c2896b2c21e3373f">ADD_REF</a>(tbl) <= 0) {
<a name="l00364"></a>00364 (<span class="keywordtype">void</span>) sigdelset(&rpmsqCaught, tbl->signum);
<a name="l00365"></a>00365
<a name="l00366"></a>00366 <span class="comment">/* XXX Don't set a signal handler if already SIG_IGN */</span>
<a name="l00367"></a>00367 (<span class="keywordtype">void</span>) sigaction(tbl->signum, NULL, &tbl->oact);
<a name="l00368"></a>00368 if (tbl->oact.sa_handler == SIG_IGN)
<a name="l00369"></a>00369 <span class="keywordflow">continue</span>;
<a name="l00370"></a>00370
<a name="l00371"></a>00371 (<span class="keywordtype">void</span>) sigemptyset (&sa.sa_mask);
<a name="l00372"></a>00372 sa.sa_flags = SA_SIGINFO;
<a name="l00373"></a>00373 #<span class="keywordflow">if</span> defined(__LCLINT__) <span class="comment">/* XXX glibc has union to track handler prototype. */</span>
<a name="l00374"></a>00374 sa.sa_handler = (handler != NULL ? handler : tbl->handler);
<a name="l00375"></a>00375 #<span class="keywordflow">else</span>
<a name="l00376"></a>00376 sa.sa_sigaction = (handler != NULL ? handler : tbl->handler);
<a name="l00377"></a>00377 #endif
<a name="l00378"></a>00378 if (sigaction(tbl->signum, &sa, &tbl->oact) < 0) {
<a name="l00379"></a>00379 <a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a>(tbl);
<a name="l00380"></a>00380 <span class="keywordflow">break</span>;
<a name="l00381"></a>00381 }
<a name="l00382"></a>00382 tbl->active = 1; <span class="comment">/* XXX just in case */</span>
<a name="l00383"></a>00383 <span class="keywordflow">if</span> (handler != NULL)
<a name="l00384"></a>00384 tbl->handler = handler;
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386 } <span class="keywordflow">else</span> { <span class="comment">/* Disable. */</span>
<a name="l00387"></a>00387 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a>(tbl) <= 0) {
<a name="l00388"></a>00388 <span class="keywordflow">if</span> (sigaction(tbl->signum, &tbl->oact, NULL) < 0)
<a name="l00389"></a>00389 <span class="keywordflow">break</span>;
<a name="l00390"></a>00390 tbl->active = 0; <span class="comment">/* XXX just in case */</span>
<a name="l00391"></a>00391 tbl->handler = (handler != NULL ? handler : <a class="code" href="rpmsq_8c.html#6698fdf84f418b855bf456c27113f5f4">rpmsqAction</a>);
<a name="l00392"></a>00392 }
<a name="l00393"></a>00393 }
<a name="l00394"></a>00394 ret = tbl->active;
<a name="l00395"></a>00395 <span class="keywordflow">break</span>;
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397 (void) <a class="code" href="rpmsq_8c.html#0d1939f0946f51ef9c8d4a3ad97935ab">DO_UNLOCK</a> ();
<a name="l00398"></a>00398 <span class="keywordflow">return</span> ret;
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400
<a name="l00401"></a><a class="code" href="rpmsq_8h.html#b13d7b8025bdd175c80fea8ea9f066fb">00401</a> pid_t <a class="code" href="rpmsq_8c.html#b13d7b8025bdd175c80fea8ea9f066fb">rpmsqFork</a>(<a class="code" href="structrpmsqElem.html">rpmsq</a> sq)
<a name="l00402"></a>00402 {
<a name="l00403"></a>00403 pid_t pid;
<a name="l00404"></a>00404 <span class="keywordtype">int</span> xx;
<a name="l00405"></a>00405 <span class="keywordtype">int</span> nothreads = 0; <span class="comment">/* XXX: Shouldn't this be a global? */</span>
<a name="l00406"></a>00406
<a name="l00407"></a>00407 <span class="keywordflow">if</span> (sq-><a class="code" href="structrpmsqElem.html#d341ce4fa8cded55a7a133876dbb5200">reaper</a>) {
<a name="l00408"></a>00408 xx = <a class="code" href="rpmsq_8c.html#7689e2d4e7d3ab32987c4c2e7d44b411">rpmsqInsert</a>(sq, NULL);
<a name="l00409"></a>00409 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00410"></a>00410 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00411"></a>00411 fprintf(stderr, <span class="stringliteral">" Enable(%p): %p\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq);
<a name="l00412"></a>00412 <span class="preprocessor">#endif</span>
<a name="l00413"></a>00413 <span class="preprocessor"></span> xx = <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(SIGCHLD, NULL);
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415
<a name="l00416"></a>00416 xx = pipe(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>);
<a name="l00417"></a>00417
<a name="l00418"></a>00418 xx = sighold(SIGCHLD);
<a name="l00419"></a>00419
<a name="l00420"></a>00420 <span class="comment">/* </span>
<a name="l00421"></a>00421 <span class="comment"> * Initialize the cond var mutex. We have to aquire the lock we </span>
<a name="l00422"></a>00422 <span class="comment"> * use for the condition before we fork. Otherwise it is possible for</span>
<a name="l00423"></a>00423 <span class="comment"> * the child to exit, we get sigchild and the sig handler to send </span>
<a name="l00424"></a>00424 <span class="comment"> * the condition signal before we are waiting on the condition.</span>
<a name="l00425"></a>00425 <span class="comment"> */</span>
<a name="l00426"></a>00426 <span class="keywordflow">if</span> (!nothreads) {
<a name="l00427"></a>00427 <span class="keywordflow">if</span>(pthread_mutex_lock(&sq-><a class="code" href="structrpmsqElem.html#9a0797e37c3dacb80d4d2a5189474299">mutex</a>)) {
<a name="l00428"></a>00428 <span class="comment">/* Yack we did not get the lock, lets just give up */</span>
<a name="l00429"></a>00429 <span class="comment">/*@-bounds@*/</span>
<a name="l00430"></a>00430 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0]);
<a name="l00431"></a>00431 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1]);
<a name="l00432"></a>00432 sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] = sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] = -1;
<a name="l00433"></a>00433 <span class="comment">/*@=bounds@*/</span>
<a name="l00434"></a>00434 <span class="keywordflow">goto</span> out;
<a name="l00435"></a>00435 }
<a name="l00436"></a>00436 }
<a name="l00437"></a>00437
<a name="l00438"></a>00438 pid = fork();
<a name="l00439"></a>00439 <span class="keywordflow">if</span> (pid < (pid_t) 0) { <span class="comment">/* fork failed. */</span>
<a name="l00440"></a>00440 sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a> = (pid_t)-1;
<a name="l00441"></a>00441 <span class="comment">/*@-bounds@*/</span>
<a name="l00442"></a>00442 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0]);
<a name="l00443"></a>00443 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1]);
<a name="l00444"></a>00444 sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] = sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] = -1;
<a name="l00445"></a>00445 <span class="comment">/*@=bounds@*/</span>
<a name="l00446"></a>00446 <span class="keywordflow">goto</span> out;
<a name="l00447"></a>00447 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pid == (pid_t) 0) { <span class="comment">/* Child. */</span>
<a name="l00448"></a>00448 <span class="keywordtype">int</span> yy;
<a name="l00449"></a>00449
<a name="l00450"></a>00450 <span class="comment">/* Block to permit parent time to wait. */</span>
<a name="l00451"></a>00451 <span class="comment">/*@-bounds@*/</span>
<a name="l00452"></a>00452 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1]);
<a name="l00453"></a>00453 xx = read(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0], &yy, <span class="keyword">sizeof</span>(yy));
<a name="l00454"></a>00454 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0]);
<a name="l00455"></a>00455 sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] = sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] = -1;
<a name="l00456"></a>00456 <span class="comment">/*@=bounds@*/</span>
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00459"></a>00459 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00460"></a>00460 fprintf(stderr, <span class="stringliteral">" Child(%p): %p child %d\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq, getpid());
<a name="l00461"></a>00461 <span class="preprocessor">#endif</span>
<a name="l00462"></a>00462 <span class="preprocessor"></span>
<a name="l00463"></a>00463 } <span class="keywordflow">else</span> { <span class="comment">/* Parent. */</span>
<a name="l00464"></a>00464
<a name="l00465"></a>00465 sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a> = pid;
<a name="l00466"></a>00466
<a name="l00467"></a>00467 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00468"></a>00468 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00469"></a>00469 fprintf(stderr, <span class="stringliteral">" Parent(%p): %p child %d\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq, sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>);
<a name="l00470"></a>00470 <span class="preprocessor">#endif</span>
<a name="l00471"></a>00471 <span class="preprocessor"></span>
<a name="l00472"></a>00472 }
<a name="l00473"></a>00473
<a name="l00474"></a>00474 out:
<a name="l00475"></a>00475 xx = sigrelse(SIGCHLD);
<a name="l00476"></a>00476 <span class="keywordflow">return</span> sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>;
<a name="l00477"></a>00477 }
<a name="l00478"></a>00478
<a name="l00485"></a><a class="code" href="rpmsq_8c.html#72785fc54bf96181de5479ad64af0361">00485</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="rpmsq_8c.html#72785fc54bf96181de5479ad64af0361">rpmsqWaitUnregister</a>(<a class="code" href="structrpmsqElem.html">rpmsq</a> sq)
<a name="l00486"></a>00486 <span class="comment">/*@globals fileSystem, internalState @*/</span>
<a name="l00487"></a>00487 <span class="comment">/*@modifies sq, fileSystem, internalState @*/</span>
<a name="l00488"></a>00488 {
<a name="l00489"></a>00489 <span class="keywordtype">int</span> nothreads = 0;
<a name="l00490"></a>00490 <span class="keywordtype">int</span> ret = 0;
<a name="l00491"></a>00491 <span class="keywordtype">int</span> xx;
<a name="l00492"></a>00492
<a name="l00493"></a>00493 <span class="comment">/* Protect sq->reaped from handler changes. */</span>
<a name="l00494"></a>00494 ret = sighold(SIGCHLD);
<a name="l00495"></a>00495
<a name="l00496"></a>00496 <span class="comment">/* Start the child, linux often runs child before parent. */</span>
<a name="l00497"></a>00497 <span class="comment">/*@-bounds@*/</span>
<a name="l00498"></a>00498 <span class="keywordflow">if</span> (sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] >= 0)
<a name="l00499"></a>00499 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0]);
<a name="l00500"></a>00500 <span class="keywordflow">if</span> (sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] >= 0)
<a name="l00501"></a>00501 xx = close(sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1]);
<a name="l00502"></a>00502 sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[0] = sq-><a class="code" href="structrpmsqElem.html#b89e60f16d0a31e07ae6239349363532">pipes</a>[1] = -1;
<a name="l00503"></a>00503 <span class="comment">/*@=bounds@*/</span>
<a name="l00504"></a>00504
<a name="l00505"></a>00505 <span class="comment">/* Put a stopwatch on the time spent waiting to measure performance gain. */</span>
<a name="l00506"></a>00506 (void) <a class="code" href="group__rpmio.html#g7f69caae88f9572093fc8b0adf8ecf65">rpmswEnter</a>(&sq-><a class="code" href="structrpmsqElem.html#a41f4835ad7e3f5719d9279526cdf002">op</a>, -1);
<a name="l00507"></a>00507
<a name="l00508"></a>00508 <span class="comment">/* Wait for handler to receive SIGCHLD. */</span>
<a name="l00509"></a>00509 <span class="comment">/*@-infloops@*/</span>
<a name="l00510"></a>00510 <span class="keywordflow">while</span> (ret == 0 && sq-><a class="code" href="structrpmsqElem.html#be51908cc11dfab4176ca2f1ba39d8ba">reaped</a> != sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>) {
<a name="l00511"></a>00511 <span class="keywordflow">if</span> (nothreads)
<a name="l00512"></a>00512 <span class="comment">/* Note that sigpause re-enables SIGCHLD. */</span>
<a name="l00513"></a>00513 ret = sigpause(SIGCHLD);
<a name="l00514"></a>00514 <span class="keywordflow">else</span> {
<a name="l00515"></a>00515 xx = sigrelse(SIGCHLD);
<a name="l00516"></a>00516
<a name="l00517"></a>00517 <span class="comment">/* </span>
<a name="l00518"></a>00518 <span class="comment"> * We start before the fork with this mutex locked;</span>
<a name="l00519"></a>00519 <span class="comment"> * The only one that unlocks this the signal handler.</span>
<a name="l00520"></a>00520 <span class="comment"> * So if we get the lock the child has been reaped.</span>
<a name="l00521"></a>00521 <span class="comment"> */</span>
<a name="l00522"></a>00522 ret = pthread_mutex_lock(&sq-><a class="code" href="structrpmsqElem.html#9a0797e37c3dacb80d4d2a5189474299">mutex</a>);
<a name="l00523"></a>00523 xx = sighold(SIGCHLD);
<a name="l00524"></a>00524 }
<a name="l00525"></a>00525 }
<a name="l00526"></a>00526 <span class="comment">/*@=infloops@*/</span>
<a name="l00527"></a>00527
<a name="l00528"></a>00528 <span class="comment">/* Accumulate stopwatch time spent waiting, potential performance gain. */</span>
<a name="l00529"></a>00529 sq-><a class="code" href="structrpmsqElem.html#a7843f1adc722184cb726babb69ab08a">ms_scriptlets</a> += <a class="code" href="group__rpmio.html#g59c7d4152875cee4e893b5a27ce6b02a">rpmswExit</a>(&sq-><a class="code" href="structrpmsqElem.html#a41f4835ad7e3f5719d9279526cdf002">op</a>, -1)/1000;
<a name="l00530"></a>00530
<a name="l00531"></a>00531 xx = sigrelse(SIGCHLD);
<a name="l00532"></a>00532
<a name="l00533"></a>00533 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00534"></a>00534 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00535"></a>00535 fprintf(stderr, <span class="stringliteral">" Wake(%p): %p child %d reaper %d ret %d\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq, sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>, sq-><a class="code" href="structrpmsqElem.html#d341ce4fa8cded55a7a133876dbb5200">reaper</a>, ret);
<a name="l00536"></a>00536 <span class="preprocessor">#endif</span>
<a name="l00537"></a>00537 <span class="preprocessor"></span>
<a name="l00538"></a>00538 <span class="comment">/* Remove processed SIGCHLD item from queue. */</span>
<a name="l00539"></a>00539 xx = <a class="code" href="rpmsq_8c.html#09357ef0a5e5847e29cbe8cc591c79f0">rpmsqRemove</a>(sq);
<a name="l00540"></a>00540
<a name="l00541"></a>00541 <span class="comment">/* Disable SIGCHLD handler on refcount == 0. */</span>
<a name="l00542"></a>00542 xx = <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(-SIGCHLD, NULL);
<a name="l00543"></a>00543 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00544"></a>00544 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00545"></a>00545 fprintf(stderr, <span class="stringliteral">" Disable(%p): %p\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq);
<a name="l00546"></a>00546 <span class="preprocessor">#endif</span>
<a name="l00547"></a>00547 <span class="preprocessor"></span>
<a name="l00548"></a>00548 <span class="keywordflow">return</span> ret;
<a name="l00549"></a>00549 }
<a name="l00550"></a>00550
<a name="l00551"></a><a class="code" href="rpmsq_8h.html#be449b3b92e2c98d46fb4bbc6cefc58e">00551</a> pid_t <a class="code" href="rpmsq_8c.html#be449b3b92e2c98d46fb4bbc6cefc58e">rpmsqWait</a>(<a class="code" href="structrpmsqElem.html">rpmsq</a> sq)
<a name="l00552"></a>00552 {
<a name="l00553"></a>00553
<a name="l00554"></a>00554 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00555"></a>00555 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00556"></a>00556 fprintf(stderr, <span class="stringliteral">" Wait(%p): %p child %d reaper %d\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq, sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>, sq-><a class="code" href="structrpmsqElem.html#d341ce4fa8cded55a7a133876dbb5200">reaper</a>);
<a name="l00557"></a>00557 <span class="preprocessor">#endif</span>
<a name="l00558"></a>00558 <span class="preprocessor"></span>
<a name="l00559"></a>00559 <span class="keywordflow">if</span> (sq-><a class="code" href="structrpmsqElem.html#d341ce4fa8cded55a7a133876dbb5200">reaper</a>) {
<a name="l00560"></a>00560 (void) <a class="code" href="rpmsq_8c.html#72785fc54bf96181de5479ad64af0361">rpmsqWaitUnregister</a>(sq);
<a name="l00561"></a>00561 } <span class="keywordflow">else</span> {
<a name="l00562"></a>00562 pid_t reaped;
<a name="l00563"></a>00563 <span class="keywordtype">int</span> status;
<a name="l00564"></a>00564 <span class="keywordflow">do</span> {
<a name="l00565"></a>00565 reaped = waitpid(sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>, &status, 0);
<a name="l00566"></a>00566 } <span class="keywordflow">while</span> (reaped >= 0 && reaped != sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>);
<a name="l00567"></a>00567 sq-><a class="code" href="structrpmsqElem.html#be51908cc11dfab4176ca2f1ba39d8ba">reaped</a> = reaped;
<a name="l00568"></a>00568 sq-><a class="code" href="structrpmsqElem.html#6a4ffd880d84a6717338f3c660411645">status</a> = status;
<a name="l00569"></a>00569 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00570"></a>00570 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00571"></a>00571 fprintf(stderr, <span class="stringliteral">" Waitpid(%p): %p child %d reaped %d\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq, sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>, sq-><a class="code" href="structrpmsqElem.html#be51908cc11dfab4176ca2f1ba39d8ba">reaped</a>);
<a name="l00572"></a>00572 <span class="preprocessor">#endif</span>
<a name="l00573"></a>00573 <span class="preprocessor"></span> }
<a name="l00574"></a>00574
<a name="l00575"></a>00575 <span class="preprocessor">#ifdef _RPMSQ_DEBUG</span>
<a name="l00576"></a>00576 <span class="preprocessor"></span><span class="keywordflow">if</span> (_rpmsq_debug)
<a name="l00577"></a>00577 fprintf(stderr, <span class="stringliteral">" Fini(%p): %p child %d status 0x%x\n"</span>, <a class="code" href="rpmsq_8c.html#74eca03bdac8cbf220bddff7e8f32a08">ME</a>(), sq, sq-><a class="code" href="structrpmsqElem.html#8f30ac4a445872588abad49c384b92e8">child</a>, sq-><a class="code" href="structrpmsqElem.html#6a4ffd880d84a6717338f3c660411645">status</a>);
<a name="l00578"></a>00578 <span class="preprocessor">#endif</span>
<a name="l00579"></a>00579 <span class="preprocessor"></span>
<a name="l00580"></a>00580 <span class="keywordflow">return</span> sq-><a class="code" href="structrpmsqElem.html#be51908cc11dfab4176ca2f1ba39d8ba">reaped</a>;
<a name="l00581"></a>00581 }
<a name="l00582"></a>00582
<a name="l00583"></a><a class="code" href="rpmsq_8h.html#a3aa2ebbfde186cb9c5687bdbeea4ad0">00583</a> <span class="keywordtype">void</span> * <a class="code" href="rpmsq_8c.html#a3aa2ebbfde186cb9c5687bdbeea4ad0">rpmsqThread</a>(<span class="keywordtype">void</span> * (*start) (<span class="keywordtype">void</span> * arg), <span class="keywordtype">void</span> * arg)
<a name="l00584"></a>00584 {
<a name="l00585"></a>00585 pthread_t pth;
<a name="l00586"></a>00586 <span class="keywordtype">int</span> ret;
<a name="l00587"></a>00587
<a name="l00588"></a>00588 ret = pthread_create(&pth, NULL, start, arg);
<a name="l00589"></a>00589 <span class="keywordflow">return</span> (ret == 0 ? (<span class="keywordtype">void</span> *)pth : NULL);
<a name="l00590"></a>00590 }
<a name="l00591"></a>00591
<a name="l00592"></a><a class="code" href="rpmsq_8h.html#0798a48224425503fe4cb455dd591b26">00592</a> <span class="keywordtype">int</span> <a class="code" href="rpmsq_8c.html#0798a48224425503fe4cb455dd591b26">rpmsqJoin</a>(<span class="keywordtype">void</span> * thread)
<a name="l00593"></a>00593 {
<a name="l00594"></a>00594 pthread_t pth = (pthread_t) thread;
<a name="l00595"></a>00595 <span class="keywordflow">if</span> (thread == NULL)
<a name="l00596"></a>00596 <span class="keywordflow">return</span> EINVAL;
<a name="l00597"></a>00597 <span class="keywordflow">return</span> pthread_join(pth, NULL);
<a name="l00598"></a>00598 }
<a name="l00599"></a>00599
<a name="l00600"></a><a class="code" href="rpmsq_8h.html#bc36f3e56d13f903648624882fc1e983">00600</a> <span class="keywordtype">int</span> <a class="code" href="rpmsq_8c.html#bc36f3e56d13f903648624882fc1e983">rpmsqThreadEqual</a>(<span class="keywordtype">void</span> * thread)
<a name="l00601"></a>00601 {
<a name="l00602"></a>00602 pthread_t t1 = (pthread_t) thread;
<a name="l00603"></a>00603 pthread_t t2 = pthread_self();
<a name="l00604"></a>00604 <span class="keywordflow">return</span> pthread_equal(t1, t2);
<a name="l00605"></a>00605 }
<a name="l00606"></a>00606
<a name="l00610"></a>00610 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00611"></a><a class="code" href="rpmsq_8c.html#48776525a3c41bc7f160fbb20307071f">00611</a> <a class="code" href="rpmsq_8c.html#48776525a3c41bc7f160fbb20307071f">sigchld_cancel</a> (<span class="keywordtype">void</span> *arg)
<a name="l00612"></a>00612 <span class="comment">/*@globals rpmsigTbl, fileSystem, internalState @*/</span>
<a name="l00613"></a>00613 <span class="comment">/*@modifies rpmsigTbl, fileSystem, internalState @*/</span>
<a name="l00614"></a>00614 {
<a name="l00615"></a>00615 pid_t child = *(pid_t *) arg;
<a name="l00616"></a>00616 pid_t result;
<a name="l00617"></a>00617
<a name="l00618"></a>00618 (void) kill(child, SIGKILL);
<a name="l00619"></a>00619
<a name="l00620"></a>00620 <span class="keywordflow">do</span> {
<a name="l00621"></a>00621 result = waitpid(child, NULL, 0);
<a name="l00622"></a>00622 } <span class="keywordflow">while</span> (result == (pid_t)-1 && <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> == EINTR);
<a name="l00623"></a>00623
<a name="l00624"></a>00624 (void) <a class="code" href="rpmsq_8c.html#707fd6e9d8f797bde46fd679fecc19f2">DO_LOCK</a> ();
<a name="l00625"></a>00625 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a> (<a class="code" href="rpmsq_8c.html#61adef654384ce04240bd18c08824ab4">rpmsigTbl_sigchld</a>) == 0) {
<a name="l00626"></a>00626 (void) <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(-SIGQUIT, NULL);
<a name="l00627"></a>00627 (void) <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(-SIGINT, NULL);
<a name="l00628"></a>00628 }
<a name="l00629"></a>00629 (void) <a class="code" href="rpmsq_8c.html#0d1939f0946f51ef9c8d4a3ad97935ab">DO_UNLOCK</a> ();
<a name="l00630"></a>00630 }
<a name="l00631"></a>00631
<a name="l00635"></a>00635 <span class="keywordtype">int</span>
<a name="l00636"></a><a class="code" href="rpmsq_8h.html#e221999e9f873dd6c118384fc151716b">00636</a> <a class="code" href="rpmsq_8c.html#e221999e9f873dd6c118384fc151716b">rpmsqExecve</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> ** <a class="code" href="compress_8c.html#b233d58a2d9af13ae09ea8fd82556856">argv</a>)
<a name="l00637"></a>00637 <span class="comment">/*@globals rpmsigTbl @*/</span>
<a name="l00638"></a>00638 <span class="comment">/*@modifies rpmsigTbl @*/</span>
<a name="l00639"></a>00639 {
<a name="l00640"></a>00640 <span class="keywordtype">int</span> oldtype;
<a name="l00641"></a>00641 <span class="keywordtype">int</span> status = -1;
<a name="l00642"></a>00642 pid_t pid = 0;
<a name="l00643"></a>00643 pid_t result;
<a name="l00644"></a>00644 sigset_t newMask, oldMask;
<a name="l00645"></a>00645 <a class="code" href="structrpmsqElem.html">rpmsq</a> sq = memset(<a class="code" href="system_8h.html#eb1df3e83fb069eaa2eb66ace3a0ea52">alloca</a>(<span class="keyword">sizeof</span>(*sq)), 0, <span class="keyword">sizeof</span>(*sq));
<a name="l00646"></a>00646
<a name="l00647"></a>00647 <span class="preprocessor">#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP</span>
<a name="l00648"></a>00648 <span class="preprocessor"></span> <a class="code" href="rpmsq_8c.html#b63be76d0a4a58d53c66c88bd353fe25">INIT_LOCK</a> ();
<a name="l00649"></a>00649 <span class="preprocessor">#endif</span>
<a name="l00650"></a>00650 <span class="preprocessor"></span>
<a name="l00651"></a>00651 (void) <a class="code" href="rpmsq_8c.html#707fd6e9d8f797bde46fd679fecc19f2">DO_LOCK</a> ();
<a name="l00652"></a>00652 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#739f39288cc3c3a4c2896b2c21e3373f">ADD_REF</a> (<a class="code" href="rpmsq_8c.html#61adef654384ce04240bd18c08824ab4">rpmsigTbl_sigchld</a>) == 0) {
<a name="l00653"></a>00653 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(SIGINT, NULL) < 0) {
<a name="l00654"></a>00654 <a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a> (rpmsigTbl_sigchld);
<a name="l00655"></a>00655 <span class="keywordflow">goto</span> out;
<a name="l00656"></a>00656 }
<a name="l00657"></a>00657 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(SIGQUIT, NULL) < 0) {
<a name="l00658"></a>00658 <a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a> (rpmsigTbl_sigchld);
<a name="l00659"></a>00659 <span class="keywordflow">goto</span> out_restore_sigint;
<a name="l00660"></a>00660 }
<a name="l00661"></a>00661 }
<a name="l00662"></a>00662 (void) <a class="code" href="rpmsq_8c.html#0d1939f0946f51ef9c8d4a3ad97935ab">DO_UNLOCK</a> ();
<a name="l00663"></a>00663
<a name="l00664"></a>00664 (void) sigemptyset (&newMask);
<a name="l00665"></a>00665 (void) sigaddset (&newMask, SIGCHLD);
<a name="l00666"></a>00666 <span class="keywordflow">if</span> (sigprocmask (SIG_BLOCK, &newMask, &oldMask) < 0) {
<a name="l00667"></a>00667 (void) <a class="code" href="rpmsq_8c.html#707fd6e9d8f797bde46fd679fecc19f2">DO_LOCK</a> ();
<a name="l00668"></a>00668 <span class="keywordflow">if</span> (<a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a> (rpmsigTbl_sigchld) == 0)
<a name="l00669"></a>00669 <span class="keywordflow">goto</span> out_restore_sigquit_and_sigint;
<a name="l00670"></a>00670 <span class="keywordflow">goto</span> out;
<a name="l00671"></a>00671 }
<a name="l00672"></a>00672
<a name="l00673"></a>00673 <a class="code" href="rpmsq_8c.html#719d9b8f4152d18f88d56908185a5fa1">CLEANUP_HANDLER</a>(<a class="code" href="rpmsq_8c.html#48776525a3c41bc7f160fbb20307071f">sigchld_cancel</a>, &pid, &oldtype);
<a name="l00674"></a>00674
<a name="l00675"></a>00675 pid = fork ();
<a name="l00676"></a>00676 <span class="keywordflow">if</span> (pid < (pid_t) 0) { <span class="comment">/* fork failed. */</span>
<a name="l00677"></a>00677 <span class="keywordflow">goto</span> out;
<a name="l00678"></a>00678 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pid == (pid_t) 0) { <span class="comment">/* Child. */</span>
<a name="l00679"></a>00679
<a name="l00680"></a>00680 <span class="comment">/* Restore the signals. */</span>
<a name="l00681"></a>00681 (void) sigaction (SIGINT, &<a class="code" href="rpmsq_8c.html#cc7097e6c17ba437a98cb41a2004c8ac">rpmsigTbl_sigint</a>->oact, NULL);
<a name="l00682"></a>00682 (void) sigaction (SIGQUIT, &<a class="code" href="rpmsq_8c.html#219e372a46ac02f2fafe0389e1ad24f4">rpmsigTbl_sigquit</a>->oact, NULL);
<a name="l00683"></a>00683 (void) sigprocmask (SIG_SETMASK, &oldMask, NULL);
<a name="l00684"></a>00684
<a name="l00685"></a>00685 <span class="comment">/* Reset rpmsigTbl lock and refcnt. */</span>
<a name="l00686"></a>00686 <a class="code" href="rpmsq_8c.html#b63be76d0a4a58d53c66c88bd353fe25">INIT_LOCK</a> ();
<a name="l00687"></a>00687
<a name="l00688"></a>00688 (void) execve (argv[0], (<span class="keywordtype">char</span> *<span class="keyword">const</span> *) argv, <a class="code" href="signature_8c.html#a006daaf11f1e2e45a6ababaf463212b">environ</a>);
<a name="l00689"></a>00689 _exit (127);
<a name="l00690"></a>00690 } <span class="keywordflow">else</span> { <span class="comment">/* Parent. */</span>
<a name="l00691"></a>00691 <span class="keywordflow">do</span> {
<a name="l00692"></a>00692 result = waitpid(pid, &status, 0);
<a name="l00693"></a>00693 } <span class="keywordflow">while</span> (result == (pid_t)-1 && <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> == EINTR);
<a name="l00694"></a>00694 <span class="keywordflow">if</span> (result != pid)
<a name="l00695"></a>00695 status = -1;
<a name="l00696"></a>00696 }
<a name="l00697"></a>00697
<a name="l00698"></a>00698 <a class="code" href="rpmsq_8c.html#ba43c05e591e8fd1fa2e584f497fba10">CLEANUP_RESET</a>(0, oldtype);
<a name="l00699"></a>00699
<a name="l00700"></a>00700 (void) <a class="code" href="rpmsq_8c.html#707fd6e9d8f797bde46fd679fecc19f2">DO_LOCK</a> ();
<a name="l00701"></a>00701 <span class="keywordflow">if</span> ((<a class="code" href="rpmsq_8c.html#0b795c3ba9f19dc35def98757bd7deaa">SUB_REF</a> (rpmsigTbl_sigchld) == 0 &&
<a name="l00702"></a>00702 (<a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(-SIGINT, NULL) < 0 || <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a> (-SIGQUIT, NULL) < 0))
<a name="l00703"></a>00703 || sigprocmask (SIG_SETMASK, &oldMask, NULL) != 0)
<a name="l00704"></a>00704 {
<a name="l00705"></a>00705 status = -1;
<a name="l00706"></a>00706 }
<a name="l00707"></a>00707 <span class="keywordflow">goto</span> out;
<a name="l00708"></a>00708
<a name="l00709"></a>00709 out_restore_sigquit_and_sigint:
<a name="l00710"></a>00710 (void) <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(-SIGQUIT, NULL);
<a name="l00711"></a>00711 out_restore_sigint:
<a name="l00712"></a>00712 (void) <a class="code" href="rpmsq_8c.html#d9549ed43cbb708e506288cb1e33d009">rpmsqEnable</a>(-SIGINT, NULL);
<a name="l00713"></a>00713 out:
<a name="l00714"></a>00714 (void) <a class="code" href="rpmsq_8c.html#0d1939f0946f51ef9c8d4a3ad97935ab">DO_UNLOCK</a> ();
<a name="l00715"></a>00715 <span class="keywordflow">return</span> status;
<a name="l00716"></a>00716 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on 1 Oct 2013 for rpm by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.7 </small></address>
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